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Thermo Forma 3950 Operating And Maintenance Manual

Reach-in co2 incubator
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Models 3950 and 3951
29 cu. ft. Capacity
Reach-In CO
Incubator
2
Operating and Maintenance Manual
Manual No: 7003950 Rev. 6

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Summary of Contents for Thermo Forma 3950

  • Page 1 Models 3950 and 3951 29 cu. ft. Capacity Reach-In CO Incubator Operating and Maintenance Manual Manual No: 7003950 Rev. 6...
  • Page 2 The material in this manual is for information purposes only. The contents and the product it describes are subject to change without notice. Thermo Forma makes no representations or war- ranties with respect to this manual. In no event shall Thermo Forma be held liable for any damages, direct or incidental, aris- ing out of or related to the use of this manual.
  • Page 3 Model 3950/3951 _______________________________________________________________________________________ Important operating and/or maintenance instructions. Read the accompanying text carefully. Ce symbole attire l'attention de l'utilisateur sur des instructions importantes de fonctionnement et/ou d'entretien. Il peut être utilisé seul ou avec d'autres symboles de sécurité. Lire attentivement le texte d'accompagnement.
  • Page 4 Model 3950/3951 _______________________________________________________________________________________...

  • Page 5: Table Of Contents

    Model 3950/3951 _______________________________________________________________________________________ Table of Contents Section 6 - Factory Options ..... .6 - 1 Section 1 - Installation and Start-Up ....1 - 1 6.1 Connections to External Equipment .

  • Page 6: Section 1 - Installation And Start-Up

    Model 3950/3951 ____________________________________________________________________Installation and Start-Up Section 1 - Installation and Start-Up Figure 1-2 Back View Figure 1-1 Front View Figure 1-3 Side View 1 - 1...

  • Page 7: Control Panel Keys, Displays And Indicators

    Model 3950/3951 ____________________________________________________________________Installation and Start-Up 1.1 Control Panel Keys, Displays and Indicators 1.2 Operation of the Keypad The Model 3950 Series Reach-In Incubator has four basic modes that allow incubator setup: Run, Setpoints, Calibration and System Configuration. • Run is the default mode during normal operation.

  • Page 8: Installing The Unit

    Model 3950/3951 ____________________________________________________________________Installation and Start-Up 1.3 Installing the Unit c. Installing the Shelves The shelves may be a. Choosing the Location installed at any level in the incubator. Install a shelf channel on each Units must be installed against a wall or similar side.

  • Page 9: The Water Supply

    With the water The 3950 Series also has an internal outlet located on the turned on, a float valve inside the incubator regulates the water right side of the interior back wall. The outlet is to provide level in the humidity reservoir.

  • Page 10: Connecting The Co Gas Supply

    Model 3950/3951 ____________________________________________________________________Installation and Start-Up The CO gas supply being connected should be industrial Connecting the CO Gas Supply grade 99.5% pure and should not contain siphon tubes. Install a two-stage pressure regulator at the cylinder outlet. The high pressure gauge at the tank should have 0-2000 psig range. The...

  • Page 11: Setting The Overtemp Setpoint

    Run mode, or press the right/left arrow keys to go to next/previous parameter. All Thermo Forma 3950 Series incubators are equipped with a secondary temperature monitoring system to monitor the air temperature inside the cabinet. This system is designed as a safety device to turn off all heaters in the event of a temperature control failure.
  • Page 12 Model 3950/3951 ____________________________________________________________________Installation and Start-Up 1 - 7...

  • Page 13: Section 2 - Calibration

    Section 2 - Calibration b. Calibrating the CO System 2.1 Calibration Mode Model 3950 Series incubators have a CO sensor. The incu- bator atmosphere is not only effected by the quantity of CO After the unit has stabilized, several different systems can present but also by the air temperature and water vapor present be calibrated.
  • Page 14 Model 3950/3951 _____________________________________________________________________________Calibration 2 - 2...

  • Page 15: Section 3 - Configuration

    Model 3950/3951 _____________________________________________________________________________Configuration c. Setting an Access Code Section 3 - Configuration A 3-digit Access Code can be entered to avoid unautho- 3.1 Configuration Mode rized personnel from changing the setpoints, calibration, or con- figuration. A setting of 000 will bypass the access code. The Several features available in the Configuration Mode allow factory setting is 000.

  • Page 16: Enabling Temp Alarms To Trip Relay Contacts

    Model 3950/3951 _____________________________________________________________________________Configuration i. Setting New Zero Number for New CO Sensors f. Setting Low CO Alarm Limit (tracking alarm) If a new CO sensor is being installed, the two numbers on The low CO alarm limit is the deviation from the CO...

  • Page 17: Selecting A Primary Tank W/ Gas Guard Option

    (1535 compatible only) On units that have the RS485 option, direct communication with the Thermo Forma 1535 Model alarm system can be established. Each piece of equipment connected to the 1535 must have a unique address. An address of 0-24 can be entered for the incubator.
  • Page 18 Model 3950/3951 _____________________________________________________________________________Configuration 3 - 4...
  • Page 19 Model 3950/3951 _____________________________________________________________________________Configuration 3 - 5...

  • Page 20: Section 4 - Alarms

    4.1 Alarms The microprocessor in 3950 Series incubators continually The Model 3950 Series incubator is equipped with a sys- scans all available sensors to ensure that they are operating tem which notifies the user of an alarm condition inside the properly.
  • Page 21 The following is a condensed list of preventive maintenance requirements. See the specified section of the instruction manual for further details. Thermo Forma has qualified service technicians, using NIST traceable instruments, available in many areas. For more information on Preventive Maintenance or Extended Warranties, please contact us at the number listed below.
  • Page 22 Incubators ______________________________________________________________________________ Preventive Maintenance Preventive Maintenance for 3950 Series Incubators Refer to Action Daily Weekly Yearly Manual Section 1.4ie Check CO tank levels. Check CO and temperature display versus setpoints Inspect door latch, hinges and door gasket seal. * Verify and document CO and temperature calibration 1.4b, 5.3...

  • Page 23: Section 5: Maintenance

    Model 3950/3951 _____________________________________________________________________________Maintenance Some precautions in the cleaning and care of the incubator Section 5: Maintenance glass doors: Moisture leaches alkaline materials (sodium, Na) from the surface of the glass. Evaporation of the moisture concentrates If the unit has been in service, turn it...

  • Page 24: Replacing The Power Fuses

    4. Install the top cover and return the unit to service. If the fuse(s) blow after restoring power to the incubator, con- tact the Thermo Forma Service Department at the tele- phone number on the back cover of this instruction man- ual.

  • Page 25: Section 6 - Factory Options

    Note: Negative display readings will output 0V. The outputs do not have isolated grounds. To wire in the analog output board, Thermo Forma recom- b. Connecting the RS485 Interface (190523) mends wire Part # 73041 which is a shielded 22 gauge, 3-con- ductor wire.

  • Page 26: Gas Guard

    10 psig (0.690 bars). At this time, the Gas Guard automatically switches to the gas supplied through CO Inlet The 3950 Series incubators can be equipped with a built-in In addition, the incubator automatically changes the Tank Gas Guard system that will operate with a CO gas supply.

  • Page 27: Inner Doors

    Model 3950/3951 ____________________________________________________________________________Specifications Section 7 – Specifications Audible and visual alarms occur on the control panel when the gas guard switches from one supply to the other. The audi- 7.1 Specifications* ble alarm sounds until the operator presses the Silence key on the control panel.
  • Page 28 230W max, 0.5 mA leakage current 190544 0-1 volt output board, FI Remote Alarm Contacts: Deviation of temperature, & power. N/O & N/C Certification: 3950 Series - UL, CSA, CE Unit BTU Output 3951 Series – CSA, CE 115V/230V: 510 BTUH (150W) Safety Specifications: Altitude:...

  • Page 29: Section 8 - Spare Parts

    For example, in CAT II which is the catego- 230135 1 amp fuse. (3950 accessory outlet) ry used for instruments in installations supplied from a supply compa- rable to public mains such as hospital and research laboratories and 230158 2.5 amp fuse.
  • Page 39 Model 3950/3951 ______________________________________________________________________Electrical Schematics 9 - 1...
  • Page 40 Model 3950/3951 ______________________________________________________________________Electrical Schematics 9 - 2...
  • Page 41 Model 3950/3951 ______________________________________________________________________Electrical Schematics 9 - 3...
  • Page 42 Model 3950/3951 ______________________________________________________________________Electrical Schematics 9 - 4...
  • Page 43 Thermo Forma Millcreek Road, P.O. Box 649 Marietta, Ohio 45750 U.S.A. Telephone (740) 373-4763 Telefax (740) 373-4189...
  • Page 44 Model 3950/3951 ______________________________________________________________________Electrical Schematics 9 - 3...
  • Page 45 Model 3950/3951 ______________________________________________________________________Electrical Schematics 9 - 4...
  • Page 46 Thermo Forma Millcreek Road, P.O. Box 649 Marietta, Ohio 45750 U.S.A. Telephone (740) 373-4763 Telefax (740) 373-4189...

This manual is also suitable for:

3951

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